21935480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78341}}^1$

素因数の和:78359

約数の個数: 32

約数和(自身を含む): 56406240

約数和(自身を除く): 34470760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78341, 156682, 313364, 391705, 548387, 626728, 783410, 1096774, 1566820, 2193548, 2741935, 3133640, 4387096, 5483870, 10967740, 21935480]

約数ペア:

[(1, 21935480), (2, 10967740), (4, 5483870), (5, 4387096), (7, 3133640), (8, 2741935), (10, 2193548), (14, 1566820), (20, 1096774), (28, 783410), (35, 626728), (40, 548387), (56, 391705), (70, 313364), (140, 156682), (280, 78341)]